@ Jos: even if the height will be enough for 2 packs, you probably won't get them in there. I have to put mine in on its side and the inside rotate it 90 degrees so it will slide under the controller. Even moving the servo aft won't help you because with 2 packs and a bigger(=heavier) motor you have to bring the packs more aft for C/G and they will hit the servo's again.
I'm away from home until friday, but if you want I can take some measurements from inside room of the the voodoo then! I'm also curious how you want to launch the Voodoo with about 180 gram more of weight?

@ Chris: Ai ,that's a lot of Amps then,which also means more heat inside the voodoo. I'm still interested in rpm's even with the 4,7x4,7 and keep us informed how much it draws with the smaller prop,please.
Good luck with the search for your prop

Images

although I really like the white/blue scheme as well I'm too happy I have chosen the yellow,red,black scheme.
It's very fast and that means within seconds it's far away, and on cloudy days I think the white one is more difficult to see

You're motor weights 169 gram???
The one I'm using 48 gram and I really don't think you will be able to get the C/G right by moving your batterypack. And to make the modell even more heavier by putting lead in the tail, I don't know.
You're landingspeed will increase a lot and and it will stall a lot easier.
Well, keep us posted on the result.
Also you might encounter problems by trying to attach a hook for your bungy, because there is really not much room left between the batterypack and the wingservo's

Arg, did not think this would be so difficult! I guess I am used to bigger planes.

You are right! This motor is not suited for this plane at all. Way to heavy!
It will instead only be used in my EDF models (700W+), if it holds up.

I asked Hopf for a Kontronik and got this instead all be it at half the price of the Kontronik. It's not a bad little motor. Anyone seen whats inside?

So I guess I have a chooise. Either get the Kontronik or go Mega maybe HET-RC in it.
I suppose I better get the plane first and then see.

As for the total weight of the plane, I am not so worried. I don't think the wingloading is al that high with just one 3S1P TP 2100 pack in it. Still well below F5D or F5B wingloadings. But I could be wrong here aswell.

Arg, did not think this would be so difficult! I guess I am used to bigger planes.

You are right! This motor is not suited for this plane at all. Way to heavy!
It will instead only be used in my EDF models (700W+), if it holds up.

I asked Hopf for a Kontronik and got this instead all be it at half the price of the Kontronik. It's not a bad little motor. Anyone seen whats inside?

So I guess I have a chooise. Either get the Kontronik or go Mega maybe HET-RC in it.
I suppose I better get the plane first and then see.

As for the total weight of the plane, I am not so worried. I don't think the wingloading is al that high with just one 3S1P TP 2100 pack in it. Still well below F5D or F5B wingloadings. But I could be wrong here aswell.

Jos.

Hi Jos,

Robert is right. 169 gram motor up front would be ugly. I'm not sure it would even fit. Not much room in these little buggers. My mega weighs around 78 grams.

I weighed my final set up tonight at 418 grams AUFW ! I now wait my 4.1x4.1 prop for maiden as current prop 4.7x4.7 pulling around 33 amps, not good !

I have flown mine again today, and it's a pleasure to fly
Only still having overheating problems on speedcontroller.After about 4min flights my controller shuts down. I Wasn't able to find a smaller prop to get a lower draw.
So I have to think of something to improve airflow in the fuselage. I will probably make some airscoops